import java.io.*;
public class testmain4 {
    public static void main(String[] args) throws  Exception{
        File f=new File("D:"+File.separator+"muyan"+File.separator+"vip"+File.separator+"yootk.txt");
        if(!f.getParentFile().exists()){
            f.getParentFile().mkdirs();
        }
        try(Writer out =new FileWriter(f)){
            out.write("沐言科技：www.yootk.com");
        }catch (Exception e){}
    }
}
